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  2. 30 mm caliber - Wikipedia

    en.wikipedia.org/wiki/30_mm_caliber

    Size comparison between 30×170mm and 5.56x45mm NATO. The 30 mm caliber is a range of autocannon ammunition. It includes the NATO standardized Swiss 30×173mm (STANAG 4624), the Soviet 30×155mmB, 30×165mm and 30×210mmB, the Czechoslovak 30×210mm, the Yugoslav 30×192mm, the British 30×113mmB, and the French 30×150mmB and 30×170mm cartridges.

  3. List of scale model sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_scale_model_sizes

    54 mm figure scale toy soldiers are supposed to use this scale as well. Same as Gauge 1, cars, common for slot cars. Commonly referred to as Stablemate size in model horses. 1:30.5: 10 mm Often quoted as the alternative to 1:32 scale. 1:30: 0.4 in: 10.16 mm Toy soldiers and military vehicles including King & Country and Figarti. 1:29: 10.51 mm

  4. Caliber - Wikipedia

    en.wikipedia.org/wiki/Caliber

    For example, 303 British firearms and projectiles are often "categorized" as ".30-caliber" alongside several dozen U.S. "30-caliber" cartridges despite using bullets of .310–.312-inch (7.87–7.92 mm) diameter while all U.S. "30-caliber" centerfire rifle cartridges use a common, standard .308-inch (7.82 mm) bullet outside diameter. Using ...

  5. Inch - Wikipedia

    en.wikipedia.org/wiki/Inch

    The United States adopted the conversion factor 1 metre = 39.37 inches by an act in 1866. [30] In 1893, Mendenhall ordered the physical realization of the inch to be based on the international prototype metres numbers 21 and 27, which had been received from the CGPM, together with the previously adopted conversion factor. [31]

  6. .30-06 Springfield - Wikipedia

    en.wikipedia.org/wiki/.30-06_Springfield

    The .30-06 Springfield cartridge (pronounced "thirty-aught-six" / ˈ θ ɜːr t i ɔː t s ɪ k s /), 7.62×63mm in metric notation, and called the .30 Gov't '06 by Winchester, [5] was introduced to the United States Army in 1906 and later standardized; it remained in military use until the late 1970s.

  7. United States Mint coin sizes - Wikipedia

    en.wikipedia.org/wiki/United_States_Mint_coin_sizes

    26.5 mm 8.1 g 1979–Present [3] $10 Eagle 27 mm 17.5 g 1795–1933 $25 American Gold Eagle 27 mm 17.5 g 1986–present $50 American Platinum Eagle 27 mm 15.6 g 1997–present Large Cent 28 mm 10.89 g 1793–1857 Half Dollar (Clad) 30.61 mm 11.34 g 1971–present Half Dollar (40% Ag) 30.6 mm 11.5 g 1965–1970, 1976(S) Half Dollar 30.6 mm 12.5 ...

  8. British standard ordnance weights and measurements - Wikipedia

    en.wikipedia.org/wiki/British_standard_ordnance...

    76.2 mm 3 inch Ordnance QF 13-pounder: Light field gun 76.2 mm 3 inch 15- pounder (multiple types) Field gun 76.2 mm 3 inch Ordnance QF 17- pounder: Anti-tank gun 76.2 mm 3 inch Ordnance QF 18- pounder: Field gun 83.8 mm 3.3 inch Ordnance QF 20-pounder: Tank gun 83.8 mm 3.3 inch Ordnance QF 25-pounder: Gun-howitzer 87.6 mm 3.45 inch

  9. 7.62 mm caliber - Wikipedia

    en.wikipedia.org/wiki/7.62_mm_caliber

    The 7.62 mm caliber is a nominal caliber used ... The measurement equals 0.30 inches or three ... also known as 7.62 mm Soviet, M43, or occasionally .30 Short ...